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{{Short description|British four-engined turboprop airliner, 1952}}
{{For|the car|Bristol Type 603}}
{{Good article}}
{{Use dmy dates|date=August 2019}}
{{Use British English|date=September 2025}}
{{Infobox aircraft
| name = Type 175 Britannia
| image = Bristol 175 Britannia 312 G-AOVT BOAC Ringway 04.08.62 edited-3.jpg
| caption = [[BOAC]] Britannia Model 312 on a transatlantic flight at [[Manchester Airport]] in 1962.
| type = Turboprop airliner
| manufacturer = [[Bristol Aeroplane Company]]
| designer = Dr. Archibald E. Russell<ref name = "Carvell p. 68" />
| first_flight = 16 August 1952
| produced = 1952–1960
| introduction = 1 February 1957 with [[BOAC]]
| retired =
| status = Retired
| primary_user = [[BOAC]]
| more_users = [[Royal Air Force]]<br />[[Canadian Pacific Air Lines]]<br />[[Cubana de Aviación]]
| number_built = 85
| variants = [[Canadair CP-107 Argus]]<br />[[Canadair CL-44|Canadair CL-44/Canadair CC-106 Yukon]]
|developed_into = [[Conroy Skymonster]]
}}

The '''Bristol Type 175 Britannia''' is a retired [[United Kingdom|British]] [[flight length|medium-to-long-range]] [[airliner]] built by the [[Bristol Aeroplane Company]] in 1952 to meet British civilian aviation needs. During development two prototypes were lost and the [[turboprop]] engines proved susceptible to inlet [[atmospheric icing|icing]], which delayed entry into service while solutions were sought.

By the time development was completed, "pure" [[jet airliner]]s from France, the United Kingdom, and the United States were about to enter service, and consequently, only 85 Britannias were built before production ended in 1960. Nevertheless, the Britannia is considered one of the landmarks in turboprop-powered airliner design and was popular with passengers. It became known as "The Whispering Giant" for its quiet exterior noise and smooth flying, although the passenger interior remained less tranquil.<ref>Littlefield 1992, pp. Cover, preface.</ref><ref name='cosfbrit'>[http://www.rafmuseum.org.uk/cosford/collections/aircraft/bristol-britannia-312.cfm "Bristol Britannia 312."] {{webarchive |url=https://web.archive.org/web/20101206055113/http://www.rafmuseum.org.uk/cosford/collections/aircraft/bristol-britannia-312.cfm |date=6 December 2010}} ''RAF Museum Cosford''. Retrieved: 19 October 2010.</ref>

[[Canadair]] purchased a licence to build the Britannia in Canada, adding another 72 aircraft in two variants. These were the stretched [[Canadair CL-44|Canadair CL-44/Canadair CC-106 Yukon]], and the greatly modified [[Canadair CP-107 Argus]] [[maritime patrol aircraft]].

==Design and development==
===Origins===
In 1942, during the [[Second World War]], Allied aircraft construction saw the UK of necessity concentrating on [[heavy bomber]]s, leaving the production of transport aircraft to the USA.<ref>Hayward 1989, pp. 38–39.</ref> This would have left the UK with little experience in transport construction at the end of the war, so in 1943, a committee under [[John Moore-Brabazon, 1st Baron Brabazon of Tara|Lord Brabazon of Tara]] investigated the future British civilian airliner market. The [[Brabazon Committee]] called for several aircraft to be developed to its specifications for Britain's civilian aviation needs.<ref>Hayward 1989, p. 40.</ref>

Bristol won the Type I and Type III contracts, delivering their Type I design, the [[Bristol Brabazon]] in 1949.<ref>Woodley 2003, p. 9.</ref> The requirement for the 1946 [[British Overseas Airways Corporation]] (BOAC) Medium Range Empire (MRE) Requirements coincided with the Type III, [[List of Air Ministry specifications|Specification C.2/47]], issued in April 1947 by the [[Minister of Supply]].<ref name="Oughton p. 96">Oughton 1973, p. 96.</ref> The specifications called for an airliner capable of carrying 48 passengers and powered with [[Bristol Centaurus]] [[radial engine]]s or [[Napier Nomad]] [[turbo-compound]] [[Diesel engine]].<ref name="Swanborough p. 26">Swanborough 1962, p. 26.</ref> Turboprop options were also considered, but they were so new that Bristol could not guarantee their performance.<ref name="Swanborough p. 26" /><ref>Oughton 1973, p. 97.</ref>

Although in-company Proposals "X" for conversions of [[Lockheed Constellation]]s to Centaurus 662 powerplants or "Y" for licence production of the Constellation were considered in late 1946, BOAC decided that an entirely new design was preferred.<ref name="Oughton p. 96" /> After wrangling between the Ministry of Supply and BOAC over costs, the go-ahead for the project assigned the company designation Model 175 in July 1948.<ref name="Barnes p344">Barnes 1964, p. 344.</ref> Three prototypes were ordered with the first being Mk 1 (Centaurus 662), and the second and third prototypes designated Mk 2 (to be convertible to [[Bristol Proteus]] turboprops, then under development).<ref name="Carvell p. 68" />

In October 1947, with work already underway, Bristol had settled on a Centaurus-powered design with a gross weight of {{convert|103000|lb|abbr=on}} and a payload of {{convert|13300|lb|abbr=on}}. The anticipated [[Karachi]]–[[Cairo]] run necessitated a 48-seat limit including sufficient fuel for the lengthy stage. On 5 July 1949, the Ministry of Supply ordered five such prototypes with the understanding that BOAC would contract for 25 production units.<ref name="Swanborough p. 26" /> BOAC purchased options for 25 aircraft on 28 July powered by the Bristol Centaurus, but to be re-fitted with the Bristol Proteus when available.<ref name="Barnes p344" />

===Redefinition and prototypes===
In November 1948, the Type 175 was revised again to accommodate 74 passengers and a longer wingspan in a contemplated long-range version aimed at long-haul Empire and transatlantic routes rather than the medium-haul Empire routes originally planned.<ref name="Taylor p32-3">Taylor 1982, pp. 33–34.</ref> On reflection, BOAC decided that only the Proteus engine was viable, necessitating a further redesign eliminating the Centaurus option. Senior figures within BOAC such as the Deputy Chairman [[Whitney Straight]], however, considered the Proteus engine to be "an obsolete contraption".<ref>Gunn 1988, p. 22.</ref> {{#tag:ref|The Proteus was still powering [[SR.N4]] hovercraft across the English Channel as late as 2000, and was still powering some warships in 1982 at the time of the [[Falklands War]].|group=N}} Despite BOAC's desire to have a turboprop engine, the Type 175 project was contingent on the Proteus passing a 150-hour Type Test.<ref name="Carvell p. 70">Carvell 2005, p. 70.</ref>

[[File:Bristol 175 Britannia 100 G-ALBO Bristols Farnborough 13.09.53 edited-2.jpg|thumb|left|The prototype Britannia 101 ''G-ALBO'' in [[BOAC]] markings at the 1953 Farnborough Air Show]]

During April 1950, the airliner's name, ''Britannia'', was selected. The designation ''Britannia 101'' was applied to first pair of prototypes, which were powered by the early Proteus 625, the successor to the 600 series engine that had already completed type trials.<ref>Carvell 2005, pp. 68, 70.</ref>

The first prototype, [[Aircraft registration|registered]] ''G-ALBO'', with Bristol Chief Test Pilot [[Bill Pegg|A.J. "Bill" Pegg]] at the controls, first flew on 16 August 1952 at [[Filton Aerodrome]].<ref name = 'cosfbrit' /><ref name="Carvell p. 67">Carvell 2005, p. 67.</ref> During the maiden flight, the over-sensitive flying controls led to wild pitching before Pegg restored control. During the landing approach, smoke filled the cockpit and the main undercarriage bogie temporarily stuck, only fully deploying seconds before landing.<ref name="Carvell p. 67" /> The snags were resolved and by September, the prototype was cleared to perform at the 1952 [[Society of British Aerospace Companies|SBAC]] Display at [[Farnborough Airshow|Farnborough]] where spectators commented on the "quietness" of the giant airliner.<ref name="Carvell p. 68">Carvell 2005, p. 68.</ref> In November 1952, [[Popular Science]] reported that by 1954 BOAC would have 25 of these aircraft on routes such as London-to-Tokyo over the [[Arctic]] and [[North Pole]].<ref>[https://books.google.com/books?id=fSEDAAAAMBAJ&pg=RA3-PA73 "Turboprop to Speed Pole-Hopping Tourists."] ''Popular Science'', 161(5), November 1952, p. 73.</ref>

===Delays===
After three [[de Havilland Comet]]s crashed without explanation in 1953 and 1954, the Air Ministry demanded that the Britannia undergo lengthy tests.<ref>[https://books.google.com/books?id=LCYDAAAAMBAJ&pg=PA112 "Giant Bathtub Puts the Pressure on Turbo-Prop Airliner."] ''Popular Science'', 167(4), October 1955, p. 112.</ref> Further delays were attributed to teething problems with the engine resulting in the loss in February 1954 of the second prototype, ''G-ALRX'', caused by a failed reduction gear that led to an engine fire and the aircraft landing on the mudflats of the Severn Estuary.{{#tag:ref|The personnel on board were unhurt. The aircraft was destroyed in the recovery effort, having belly landed and sunk into the soft mud of the estuary, defying all attempts at extracting it undamaged.|group=N}} Finally, time was lost in resolving inlet icing issues (by selecting a different cruising height) that were discovered as the first aircraft were being delivered to BOAC. These were exaggerated by BOAC, devastated future sales and delayed the Britannia's introduction by two years.<ref>Gunston 2006, p. 37.</ref><ref>Gunn 1988, p. X.</ref><ref>[https://books.google.com/books?id=Nou8mkjPMPUC&pg=PA5 "A Solution for the Britannia."] ''The New Scientist,'', 2(50), 31 October 1957, p. 5.</ref>

[[File:Bristol 175 Britannia 102 G-ANBO BY RWY 29.08.65 edited-3.jpg|thumb|left|[[Britannia Airways]] Britannia Model 102 at [[Manchester Airport]] in 1965]]
The first prototype ''G-ALBO'' was modified to more closely approximate a production standard, but was retained by the company to undergo engine testing and development.<ref name="Carvell">Carvell 2005, p. 71.</ref> Bristol revised the design into a larger transatlantic airliner for BOAC, resulting in the Series 200 and 300; the Britannia 300LR (Long-Range) was viewed as being "eminently suitable" for BOAC's services between London and Sydney.<ref>Gunn 1988, p. 43.</ref> The purchase price for each Britannia 100-series aircraft was agreed by BOAC in 1955 at £768,000.<ref>[http://www.flightglobal.com/pdfarchive/view/1960/1960%20-%202674.html "Britannia 100."] ''Flight'', 18 November 1960.</ref>

[[Australia]]n airline [[Qantas]] considered the procurement of a Britannia fleet, however its protracted development eroded any competitive advantage against the [[Douglas DC-8]] and [[de Havilland Comet 4]].<ref>Gunn 1988, pp. 39–39.</ref> Route-proving trials continued through 1955, although orders were on the books from ''[[El Al]]'' and [[Canadian Pacific Air Lines]] alongside the standing order placed by BOAC.<ref name="Carvell" />

During the first eight months of its operational trials,{{#tag:ref| Aviation historian Roger Carvell typified the experience as "Around the World in 80 Delays", taking his cue from a popular refrain that was coined during the Britannia's troubled proving flights.|group=N}} a total of 16 in-flight engine failures and 49 unscheduled engine changes punctuated the ongoing engine problem and delayed the Britannia's in-service date until February 1957, roughly two years late.<ref name = 'Orle 27'>Orlebar 2002, p. 27.</ref><ref name="Carvell p. 74">Carvell 2005, p. 74.</ref> The Britannia received a fair amount of attention in both the popular press and the [[British House of Commons]], especially when it was revealed that BOAC had contemplated fitting [[Rolls-Royce Tyne]]s to their fleet of [[Douglas DC-7]]s as an interim measure until the Britannia was cleared for service.<ref name="Carvell p. 68" />

In 1956, Bristol's managing director [[Peter Masefield]] flew the tenth production Britannia, G-ANBJ, on a world sales tour. American interest was strong, since the Britannia seemed to be a faster, longer-range, higher-capacity sister of the [[Vickers Viscount]], which was already a marketing success on US domestic routes, and, compared to the piston-engined DC-7C, itself a new type, the Britannia offered similar transcontinental or transatlantic range with greater speeds and the public appeal of more modern powerplants. [[Eastern Air Lines]] and [[TWA]] both wished to place orders, which might have forced competitors to follow suit. TWA's majority owner [[Howard Hughes]] took the controls of the Britannia for one flight and immediately requested 30 aircraft. However, the Americans wanted delivery within a couple of years, and Bristol, with its limited production facilities and the prior commitment to the BOAC order, could not meet that requirement, so, with the [[Boeing 707]] and Douglas DC-8 jets expected in service by 1958-9, the opportunity passed.<ref>Hamilton-Paterson 2010, p.268.</ref>

Aviation historian Peter Pigott summarised the impact of the delays:
{{Cquote|Had the Britannia appeared in 1950, when it was faster than every American aircraft, it would have put the British at the forefront of commercial aviation sales. Now, competing with the Boeing 707, the turboprop airliner had become passé.<ref>Pigott 2005, p. 138.</ref>{{#tag:ref|The Britannia could only have been available by 1950 if it had been ordered earlier. The world's first turboprop airliner, the [[Vickers Viscount]], did not enter service until 1953. BOAC had shown similar indecisiveness with the earlier [[Avro Tudor]].|group=N}}}}

===Related developments===
[[File:Bristol 175 Britannia 314 G-ATLE Transglobe Ringway 06.66 edited-2.jpg|thumb|Ex-[[Canadian Pacific Air Lines]] Britannia Model 314 of [[Transglobe Airways]] at Manchester Airport in June 1966]]

In 1954, a licence was issued to [[Canadair]] to build the derivative [[Canadair CP-107 Argus|Canadair CL-28/CP-107 Argus]], and the [[Canadair CL-44]]/Canadair CC-106 Yukon.<ref name = 'piggott 139' /> Based on the Britannia, the Argus maritime patrol and anti-submarine military aircraft was optimised for endurance on long-range patrol, not speed, and used four [[Wright R-3350-32W]] Turbo-Compound engines{{#tag:ref|The [[Wright R-3350]] was first used on the [[Boeing B-29 Superfortress]].|group=N}} that used less fuel at low altitude.<ref name = 'piggot 168'>Piggot 2005, p. 168.</ref> Unlike its Britannia forebear, the Argus was a hybrid, using the Britannia wings, tail surfaces and landing gear matched to a "purpose-built", unpressurised fuselage. It substituted North American materials and standard parts for British parts.<ref name="Pickler and Milberry pp. 145–155">Pickler and Milberry 1995, pp. 145–155.</ref>

The interior of the Argus was well equipped to conduct anti-submarine warfare&nbsp;— navigation, communication and tactical electronic equipment along with weapon loads that included bombs, torpedoes, mines and depth charges.<ref name = 'piggot 168' /> A total of 33 Argus aircraft were built in two series (Mk 1 and Mk 2), serving the [[Royal Canadian Air Force]] (RCAF) and Canadian Forces from 1957 to 1982.<ref name="Pickler and Milberry pp. 148–149" />

Canadair built 39 Canadair CL-44/Canadair CC-106 Yukon turboprop Rolls-Royce Tyne-powered aircraft, comprising 12 CC-106 Yukon for the RCAF and 27 CL-44D4 passenger/cargo variants for the civil market. Civilian operators typically operated the type as [[Cargo aircraft|freighters]]. Four CL-44D4s were converted as CL-44Js with lengthened fuselages for service with the [[Iceland]]ic [[Low-cost carrier|"budget"]] airline ''[[Loftleiðir]]''. The CL-44D4s were all built with swing-tails to allow straight-in cargo loading and served with a variety of carriers, most notably [[Flying Tiger Line]].<ref name="Pickler and Milberry pp. 148–149">Pickler and Milberry 1995, pp. 148–149.</ref><ref>Woodley 2003, p. 130.</ref> The similar CC-106 Yukon was used by the RCAF in a solely passenger configuration.<ref name = 'piggot 146'>Piggot 2005, p. 146.</ref>

A final "one-off" development was the [[Conroy Skymonster]], nicknamed ''Guppy'', based on a Canadair CL-44D4 N447T. The prominent modification was an enlarged fuselage, like the [[Mini Guppy]], which was produced by Jack Conroy's previous company, Aero Spacelines.<ref>Savage, Daren. [http://www.allaboutguppys.com/ "Conroy Aircraft CL-44-O Skymonster (Guppy CL44)."] ''All About Guppys,'' 2008. Retrieved: 20 October 2010.</ref> After a long operational career as a freighter, the ''Guppy'' was stored at [[Bournemouth Airport]] in 2003 and was later sold.<ref>[https://swingtail44.blogspot.com/ "Cl-44 Association."] ''swingtail44.blogspot.com.'' Retrieved: 20 October 2010.</ref>

==Operational history==
[[File:Bristol 175 Britannia 312 G-AOVP BA RWY 15.12.59 edited-2.jpg|thumb|BOAC Britannia Model 312 landing at [[Manchester Airport]] in December 1959 after a transatlantic flight]]
Following a long period of uneventful development flying trials and the fitting of a modified Proteus 765 series engine that greatly reduced breakdowns, a full Certificate of Airworthiness was awarded at the end of 1955.<ref name="Carvell p. 74" /> The first two Model 102s were delivered to BOAC on 30 December 1955 for crew training.<ref name="Jackson265">Jackson 1974, p. 265.</ref> The Model 102 began scheduled service on 1 February 1957 with a BOAC flight from London to Johannesburg,<ref name = 'BAhis'>[http://www.britishairways.com/travel/history-1950-1959/public/en_gb "Explore our past: 1950 – 1959."] ''British Airways''. Retrieved: 19 October 2010.</ref> flights to Sydney following in March and to Tokyo in July. By August 1957, the first 15 Model 102 aircraft had been delivered to BOAC.<ref name="Barnes p347">Barnes 1964, p. 347.</ref> The last 10 aircraft of the order were built as Series 300 aircraft for transatlantic flights.<ref name="Barnes p347" />

In April 1959, a Model 102 Britannia was leased by BOAC to [[Ghana Airways]] for flights between [[Accra]] and London, and several more Britannias were purchased by the airline in the early 1960s.<ref>Guttery 1998, pp. 75–76.</ref> The Model 102 was eventually made available to other BOAC associates, including Cathay Pacific, Central Africa, East African, Nigeria and Malayan airlines.<ref name="Swanborough p. 27">Swanborough 1962, p. 27.</ref>

[[File:britannia.plan.arp.750pix.jpg|thumb|left|[[Royal Air Force]] Britannia C2 (Model 253) ''Acrux'' in 1964]]
The next production series was based on the long-range, mixed passenger/freight Model 200 series that was intended for civil airline use, but ultimately Bristol offered the series to the [[Royal Air Force]] (RAF) instead.<ref name="Swanborough p. 27" /> The production series of three Model 252 and 20 Model 253 aircraft were purchased by RAF Transport Command in 1959, assigned the designation ''Britannia C.2'' (first Model 252 series) and ''C.1'' (Model 253 series).<ref name = 'Orle 28' /> Those in RAF service were allocated the names of stars, such as "Arcturus", "Sirius" and "Vega". On retirement from the RAF in 1975, many Model 200 series were subsequently used by independent civil operators for cargo operations, harkening back to their original intended role.<ref name = 'cosfbrit' /><ref>Berry 1996, p. 603.</ref>

Although the Bristol Model 302 was built first as part of the original BOAC order, BOAC released this series to other airlines; ''[[Aeronaves de Mexico]]'' took two Model 302s, which entered service in December 1957.<ref name="Swanborough p. 27" /> The 18 Bristol Britannia 312s for BOAC were delivered from September 1957 with its service introduction on the first-ever non-stop flight from London to Canada on 19 December 1957.<ref name = 'BAhis' /> In late December 1957, BOAC began regular Britannia flights from London to New York.<ref>[https://books.google.com/books?id=l30BX74f70kC&pg=PA687 "The New Scientist: 20 Years Ago."] ''The New Scientist,'' 76(1082), 15 December 1977, p. 687.</ref> Other airlines, such as [[Israel]]'s ''El Al'', also operated the Britannia on transatlantic routes.<ref>Van Riper 2004, p. 90.</ref>

In 1959, BOAC started flying the Britannia across the Pacific to Tokyo and Hong Kong, thus extending their network round the world.<ref name = 'BAhis' /> The westbound routing in 1959 for these intercontinental BOAC Britannia flights between the UK and Asia was London-New York-San Francisco-Honolulu-Wake Island-Tokyo-Hong Kong.<ref>[http://www.timetableimages.com "BOAC Sept. 1, 1959 Timetable."] ''Airline Timetable Images'', 18 June 2015.</ref>

[[File:Bristol Britannia 318 CU-T670 Lima 04.72.jpg|thumb|Cubana de Aviacion Britannia 318 at Lima Peru in 1972]]
On 1 April 1958 Canadian Pacific Air Lines took delivery of the first of six Model 314 Britannias,<ref name = 'piggott 139'>Piggott 2005, p. 139.</ref> with an additional two Model 324s (built to a 320 standard) arriving later and sold to [[Cathay Pacific]] in 1961.<ref name="Swanborough p. 29">Swanborough 1962, p. 29.</ref> BOAC ordered seven Model 302s, but never took delivery, instead they were taken on by airlines including ''Aeronaves de México'' and Ghana Airways.<ref name = 'Orle 28'>Orlebar 2002, p. 28.</ref><ref>[https://books.google.com/books?id=ZnvVAAAAMAAJ "Britannia Aeronaves de Mexico."] ''Aviation Week and Space Technology'' (McGraw-Hill), 1959. p. 49.</ref> The main long-range series were the 310s, of which BOAC took 18 and, after deliveries began in September 1957, put them into service between London and [[New York City]]; in March 1964 BOAC owned 50 aircraft, 10 being Britannia 312s.<ref>Gunn 1988, p. 314.</ref> BOAC's last scheduled Britannia flight was April 1965.<ref>''Flight'' 29 April 1965</ref>

The 310 series (the Model 318) also saw transatlantic service with ''[[Cubana de Aviación]]'' starting in 1958, in spite of the [[Cuban Revolution]] the airline had a special accord with British aircraft manufacturers to maintain this model of aircraft.<ref>"Cuba update: a publication of the Center for Cuban Studies." ''Center for Cuban Studies'', 11 (1–2), 1990, p. 12.</ref> In 1975, multiple Cuban Britannias were used to transport hundreds of soldiers of the [[Cuban Revolutionary Armed Forces]] to [[Angola]] in [[Operation Carlota]], a [[proxy war]].<ref>George 2005, pp. 60, 67.</ref> ''Cubana de Aviación'' continued to fly its fleet of Britannias until March 1990.<ref name='regulus'>[http://www.xm496.com/xm496.php "XM496 Regulus."] {{webarchive|url=https://web.archive.org/web/20110903064710/http://www.xm496.com/xm496.php |date=3 September 2011}} ''XM496 Preservation Society'', Retrieved: 19 October 2010.</ref>

[[File:Darwin's Civil Airport BOAC Britannia 1958.jpg|thumb|left| BOAC Britannia Model 312 at [[Darwin International Airport|Darwin Airport]], c. 1958]]
Following the purchase of remaining spare parts from the [[Royal Aircraft Establishment]] and Cubana, Zaïrois airlines continued to operate several Britannias into the early 1990s on regular cargo flights from [[N'djili Airport]] to various destinations within the country.<ref>[http://www.aerotransport.org/php/go.php?query=operator&where=53919&luck "Profile for: Katale Aero Transport."] ''AeroTransport Data Bank'', 2013.</ref>

Most aircraft were built by Bristol at Filton, but 30 were built at [[Belfast]] by [[Short Brothers|Short Brothers and Harland]].<ref>Carvell 2005, p. 78.</ref><ref>"Britannia." ''Flight International'', 82, 1962, p. 861.</ref> Due to the extended development instead of a projected production of 180 Britannias, only 80 were sold.<ref name = 'Orle 27' /> The negative experience with the development of the Britannia caused BOAC to be more cautious towards other British-made aircraft such as the [[Vickers VC10]].<ref>Orlebar 2002, p. 29.</ref> Throughout the Britannia's lifespan, the engine icing condition remained a "continual potential hazard" that flight crews ultimately learned to manage with a "high-lo" flight regime that minimised the danger,<ref>Carvell 2005, p. 86.</ref> Squadron Leader David Berry who had 5,000 hours on the type characterised it as flying "Beauty and the Beast."<ref>Carvell 2005, p. 84.</ref> ''[[Aeroplane (magazine)|Aeroplane]]'' in "100 Great British Aircraft" (2008) said the Britannia counted among the "greats".<ref>Oakey 2008, p. 81.</ref>
{{Clear}}

==Variants==

===Bristol Model 175===
;Mk 1
:Prototype powered by Bristol Centaurus 662, fuselage length of 114&nbsp;ft (35m), span 120 ft (36.5 m), seating for 48 passengers, not built<ref name="Carvell p. 68" />
;Mk 2
:Two prototypes powered by either Bristol Centaurus 662 or Bristol Proteus 600; with the Proteus, the fuselage length of 114&nbsp;ft (35m) was fitted with a longer wingspan 140 ft (43 m) and reduced seating for 36 passengers, two prototypes planned, none built.<ref name="Carvell p. 68" />
[[File:Bristol Britannia 102 G-ANBA, BOAC (1959).jpg|thumb|BOAC Bristol Britannia Model 102 ''G-ANBA,'' c. 1959]]

===Series 100===
Seventy-four passenger airliner with 114&nbsp;ft (35m) fuselage and powered by four Bristol Proteus 705
;101
:Prototypes, two initially powered by Proteus 625 and soon after re-engined with the Proteus 755, later the first prototype ''G-ALBO'' was used for development testing of the [[Bristol Orion]] in 1956 and the Proteus 765 in 1957.<ref name="Jackson268">Jackson 1974, p. 268.</ref>
;102
:Production aircraft for BOAC, 25 ordered with the last 10 cancelled in favour of the 300 series, 15 built.<ref name="Barnes p348">Barnes 1962, p. 348.</ref><ref name="Taylor p42">Taylor 1982, p. 42.</ref>
[[File:Britannia.red.750pix.jpg|thumb|UK Ministry of Defence Britannia 312F XX367 visiting the maker's factory at Filton on 29 April 1983, the 25th anniversary of its first flight. As a civil airliner, it had flown for BOAC, [[British Eagle]] and Air Spain.]]

===Series 200===
All cargo variant with a 124&nbsp;ft 3&nbsp;in (38&nbsp;m) fuselage, BOAC option for five was cancelled, none built.<ref name="Barnes p348" />

===Series 250===
Similar to the 200 series, but mixed passenger and freight.<ref name="Barnes p348" />
;252
:Originally ordered by the Ministry of Supply for intended lease to charter operators, but delivered to the Royal Air Force, as the Britannia C2. Fitted with a heavy-duty floor in forward area of fuselage and cargo door, three built.<ref name="Taylor p44">Taylor 1982, p. 44.</ref>
;253
:Passenger/freight variant for the Royal Air Force, designated Britannia C1. Fitted with full length heavy-duty floor and provision for rearwards-facing seats, as preferred by the RAF. Capacity for 115 troops or equivalent in cargo, 20 built.<ref name="Taylor p44-5">Taylor 1982, pp. 44–45.</ref> Aircraft later sold on the civil market as freighters designated Series 253F.
[[File:Bristol Britannia - geograph.org.uk - 770412.jpg|thumb| Britannia Model 312 formerly flying for [[Monarch Airlines]] now on display at [[Duxford Aerodrome]]]]

===Series 300===
Passenger-only version of the 200 series, capable of carrying up to 139 (originally 99) passengers, medium-fuel capacity.<ref>Woodley 2002 p28-29 </ref>
;301
:One Filton-built company prototype, used the same wing and fuel capacity of the Model 100; first flew: 31 July 1956.<ref name="Swanborough p. 27" />
;302
:Belfast-built production, 10 ordered by BOAC, but cancelled in favour of 305; seven were begun to this standard with two delivered to ''Aeronaves de Mexico''.<ref name="Swanborough p. 27" />
;305
:Five Belfast-built 302s modified for longer-range, but with limited takeoff weight due to thinner fuselage skin and lighter landing gear. Originally ordered by [[Capital Airlines (United States)|Capital Airlines]], which were cancelled and then for [[Northeast Airlines]], which also cancelled. All modified to other variants.<ref name="Swanborough p. 27" />
;306
:One former Series 305 leased to ''El Al'' pending delivery of last Series 313. Later converted to Series 307.<ref name="Taylor p42" />
;307
:Two of the ex-BOAC Northeast 305 order (one formerly the ''El AL'' Series 306) to [[Air Charter Limited]] September 1958 and March 1959, with a new designation: Model 307. Later to [[British United Airways]].<ref name="Swanborough p. 27" /><ref name="Taylor p43-4">Taylor 1982, pp. 43–44.</ref>
;307F
:1960s conversion of 307 to freighter (both converted).<ref name="Taylor p42" />
;308
:Two former 305s ordered by Transcontinental SA of Argentina in 104-passenger configuration.<ref name="Taylor p44" />
;308F
:1960s conversion of 308 to freighter for [[British Eagle]] (both converted).<ref name="Taylor p42" />
;309
:One former 305 (leased to Ghana Airways).<ref name="Taylor p42" />

===Series 310===
As 305 series, but with strengthened fuselage skin and undercarriage. Long-range fuel capacity and was originally known as 300LR.
;311
:One prototype originally known as a 300LR.<ref name="Barnes p350">Barnes 1962, p. 350.</ref>
;312
:Production aircraft for BOAC, 18 built.<ref name="Barnes p349">Barnes 1962, p. 349.</ref>
;312F
:1960s conversion of 312 to freighter (five converted).
;313
:Production aircraft for ''El Al'', four built.<ref name="Taylor p42" />
;314
:Production aircraft for Canadian Pacific Air Lines, six built.<ref name="Taylor p42" />
;317
:Production aircraft for Hunting-Clan Air Transport in 124 passenger trooping configuration, two built.<ref name="Taylor p44" />
;318
:Production aircraft for ''Cubana de Aviación'', four built. Delivery taking place on 15 December 1958, later one leased to Cunard Eagle in 1960–1961 and this same airliner leased to CSA in 1962.<ref name="Swanborough p. 29" />
;319
:1960s conversion of 312 for Ghana Airways (one aircraft).
;320
:Variant for North American market, order for [[Trans World Airlines]] not concluded, two built were completed as Series 324s.
;324
:Two Series 320s built for Canadian Pacific Air Lines, later purchased by [[Cunard Eagle Airways]] in 1961.<ref name="Swanborough p. 29" />

==Operators==
[[File:Bristol 175 Britannia 312 G-AOVF Donaldson RWY 4.9.71 edited-3.jpg|thumb|Donaldson Airways Britannia Model 312 ''G-AOVF'' at Manchester Airport, September 1971]]
[[File:British Eagle Britannia.jpg|thumb|British Eagle Britannia Model 312 at Manchester England, August 1964]]
[[File:Raf britannia xm496 arp.jpg|thumb|Ex-RAF Britannia C2 (Model 253) ''Regulus'' as of 2007 is being restored by the Bristol Britannia Preservation Society at [[Cotswold Airport]], [[England]]]]

===Civilian operators===
{{columns-list|colwidth=15em|
;{{ARG}}
* ''Aerotransportes Entre Rios''
* Transcontinental SA
;{{AUS}}
* Southern Cross International (leased)
;{{BEL}}
* Young Cargo
;{{BDI}}
* ''Centre Air Afrique''
;{{CAN}}
* [[Canadian Pacific Air Lines]]
;{{CUB}}
* Aerocaribbean
* ''[[Cubana de Aviación]]''
;{{CSK}}
* [[Czech Airlines|CSA]] leased two aircraft from Cubana de Aviación (1961–1964 and 1963–1969).<ref name="Eastwood" />
;{{GHA}}
* [[Ghana Airways]]
* Gemini Air Transport
;{{IDN}}
* Indonesian Angkasa Civil Air Transport
;{{IRL}}
* ''[[Aer Turas]]''
* Interconair
;{{ISR}}
* ''[[El Al]]'' – An El Al Bristol Britannia was used by Israel to fly Nazi war criminal [[Adolf Eichmann]] out of Argentina after his capture in 1960.
;{{KEN}}
* African Cargo Airlines
* [[African Safari Airways]]
;{{Flag|Kenya|colonial}}, {{Flag|Uganda|colonial}}, {{Flag|Tanganyika}} and {{Flag|Zanzibar|colonial}}
* [[East African Airways]] (leased from BOAC)
;{{LBR}}
* Liberia World Airways
;{{MYS}}
* ''[[Malayan Airways]]''
;{{MEX}}
* ''[[Aeronaves de México]]''
;{{ESP}}
* [[Air Spain]]
;{{CHE}}
* Globe Air operated two former ''El Al'' 313s between 1964 and 1967.<ref name="Eastwood" />
;{{ARE}}
* Gaylan Air Cargo (United Arab Emirates)
;{{flag|United Kingdom}}
* [[Air Charter Limited|Air Charter]]
* [[Air Faisal]]
* [[BKS Air Transport]]
* [[British Overseas Airways Corporation]] (BOAC)
* [[Britannia Airways]]
* [[British Eagle]]
* [[British United Airways]]
* [[Caledonian Airways]]
* [[Cathay Pacific]]
* [[Cunard Eagle Airways]]
* [[Donaldson International Airways]]
* [[Hunting-Clan Air Transport]]
* International Air Services
* [[Invicta International Airlines]]
* [[Lloyd International Airways]]
* [[Monarch Airlines]]
* [[Redcoat Air Cargo]]
* Transglobe Airways
;{{ZAI}}
* ''Domaine de Katale''
* Katale Air Transport
* Lukum Air Services
* Transair Cargo
}}

===Military operators===
;{{flag|United Kingdom}}
* [[Aeroplane and Armament Experimental Establishment]]
* [[Royal Air Force]]
** [[No. 99 Squadron RAF]]
** [[No. 511 Squadron RAF]]
;{{flag|Cuba}}
* [[Cuban Air Force]]

==Accidents and incidents==
Fourteen Britannias were lost with a total of 365 fatalities between 1954 and 1980. The worst accident was the [[1967 Nicosia Britannia disaster]] with a loss of life totalling 126.<ref name="Times">"Britannia crash Kills 126: Cyprus storm disaster." ''The Times,'' Issue 56921, 21 April 1967, p. 4, column D.</ref>
* On 4 February 1954, the second Britannia prototype was on a test flight when it crashed at [[Severn Beach]], [[Gloucestershire]]. No. 3 engine indicated a loss of oil pressure so the crew shut it down. The crew restarted No. 3 but a fire broke out and could not be contained. No. 4 engine was then shut down as a precaution. On approach to Filton Airport, there was concern that the uncontrolled fire would lead to a failure of the [[Spar (aeronautics)|main spar]] so the pilot, William "Bill" Pegg, elected to make an emergency landing on the mudflats of the Severn Estuary. There were no fatalities.<ref>[http://aviation-safety.net/database/record.php?id=19540204-0 "Bristol Britannia accident: 4 February 1954."] ''aviation-safety.net.'' Retrieved: 3 February 2011.</ref>
* On 6 November 1957, the 300 series prototype [[Downend air crash|crashed during a test flight]], killing the 15 occupants.<ref name="times53992">15 killed in Britannia test flight crash." ''The Times'', Issue 53992, 7 November 1957, p. 10, column E.</ref>
* On 24 December 1958, a BOAC Britannia 312 on a test flight [[1958 BOAC Bristol Britannia crash|crashed at Winkton]], killing nine of the passengers and crew on board.<ref>{{ASN accident|id=19581224-1}}</ref>
* On 5 July 1960, a Cuban Bristol Britannia 138 was hijacked by two co-pilots and diverted to Miami.
* On 22 July 1962, [[Canadian Pacific Air Lines Flight 301]] a Britannia 314 was destroyed during an attempted "go-around" following a three-engined approach at [[Honolulu Airport]], Hawaii, killing 27 of the 40 on board.<ref name="Eastwood" />
* On 29 February 1964, [[British Eagle International Airlines Flight 802/6]] crashed into the [[Glungezer]] mountain near [[Innsbruck]] killing all 83 people aboard.<ref>[http://aviation-safety.net/database/record.php?id=19640229-0 "Accident description: Bristol 175 Britannia 312, Operator: British Eagle International Airlines."] ''aviation-safety.net.'' Retrieved: 17 July 2010.</ref>
* On 1 September 1966, [[Britannia Airways Flight 105]] crashed while landing at [[Ljubljana]], Slovenia (then Yugoslavia), resulting in a total of 98 fatalities out of 117 passengers and crew. The probable cause was the flight crew having failed to set their altimeter to [[Atmospheric pressure#Mean sea-level pressure|QFE]] instead of [[QNH]], creating a {{convert|980|ft|m}} error in indicated altitude.<ref>{{usurped|1=[https://web.archive.org/web/20090102212728/http://www.airdisaster.com/cgi-bin/view_details.cgi?date=09011966&reg=G-ANBB&airline=Britannia%2BAirways "Ljubljana crash."]}} ''Air Accident database''. Retrieved: 17 July 2010.</ref>
[[File:Britannia Airways Flight 105 crash in Lahovče 1966 1.jpg|thumb|Britannia Airways Flight 105 crash in Slovenia 1966]]
* On 20 April 1967, a Globe Air Britannia 313 was on a flight from Bangkok to Basel with intermediate stops at Colombo, Bombay (Mumbai) and Cairo. The crew did not fly to Cairo, but elected to fly to Nicosia instead, where a missed approach and subsequent low circuit ended in impact near the airport perimeter.<ref>[http://aviation-safety.net/database/record.php?id=19670420-1 "ASN Accident report Bristol 175 Britannia 313 HB-ITB Nicosia Airport."] ''aviation-safety.net.'' Retrieved: 20 October 2010.</ref>
* On 12 October 1967, "Sirius" – a Royal Air Force C1 – was damaged beyond repair after over-running the runway at [[RAF Khormaksar]], Aden.<ref name="Eastwood">Eastwood 1990, pp. 70–76.</ref>
* On 30 September 1977, an [[Interconair]] Britannia 253G was on a ferry flight. On approach to [[Shannon Airport]] severe vibration was experienced at a height of 300 feet. The approach was abandoned and an overshoot was commenced. The aircraft continued to sink and collided with the ground, short of, and to the right of, the runway. The aircraft bounced and the right wing broke off. The aircraft then skidded and caught fire. All six people on board survived.<ref>[http://aviation-safety.net/database/record.php?id=19770930-1 "Aircraft accident Bristol 175 Britannia 253 EI-BBY Shannon Airport (SNN)"] ''aviation-safety.net.'' Retrieved: 27 January 2016.</ref>
* On 16 February 1980, a Britannia 253F of [[Redcoat Air Cargo]] crashed at Billerica, Massachusetts, shortly after taking off from Boston. The probable cause was an accumulation of ice and snow on the airframe before takeoff and a further accumulation of ice when it was then flown into moderate to severe icing conditions. Contributing to the cause were encounters with wind shear, downdrafts, and turbulence during the climb. Of eight crew and passengers, seven died and one was seriously injured.<ref>''National Transportation Safety Board Report,'' NTSB-AAR-81-3.</ref>

==Surviving aircraft==
[[File:BristolBritanniaNose-mrh02.JPG|thumb|Nose of second prototype Britannia G-ALRX at the Bristol Aero Collection.]]
* Britannia 101 (''G-ALRX'') - Forward fuselage is at [[Aerospace Bristol]]. This is the second prototype aircraft, damaged in the Severn Estuary crash.
* Britannia 308F (''G-ANCF'') - Removed from Kemble, and reassembled in early 2007 in [[Liverpool]], England. Under restoration on the former [[airside]] [[Airport apron|apron]] behind the [[Crowne Plaza Liverpool John Lennon Airport Hotel]], which was the original terminal building of [[Liverpool Speke Airport]].<ref name='Brittrust'>[http://www.xm496.com/xm496.php "Britannia Aircraft Preservation Trust."] {{webarchive|url=https://web.archive.org/web/20110903064710/http://www.xm496.com/xm496.php |date=3 September 2011}} ''Britannia Aircraft Preservation Trust''. Retrieved: 19 October 2010.</ref>
* Britannia 312 (''G-AOVF'') - On display at the [[Royal Air Force Museum Cosford]], England, in [[RAF Air Support Command]] colours as ''XM497'' "''Schedar''".<ref name = 'cosfbrit' />
* Britannia 312F (''G-AOVS'') - Derelict fuselage on the fire training dump at [[London Luton Airport]], [[Luton]], England, in [[Redcoat Air Cargo]] colours as ''G-AOVS'' "''Christian''". Is visible from the Wigmore Valley Park playing fields.<ref name = 'lutonbrit'>[http://www.oldprops.ukhome.net/Britannia%20photographs.htm "Oldprops Bristol Britannia photographs."] ''Oldprops Bristol Britannia photographs''. Retrieved: 29 May 2011.</ref>
* Britannia 312 (''G-AOVT'') - On display at the [[Imperial War Museum Duxford]], England, in [[Monarch Airlines]] colours.<ref>[http://duxford.iwm.org.uk/server/show/ConWebDoc.1007 "The Duxford Aviation Society."] {{webarchive |url=https://web.archive.org/web/20110718055233/http://duxford.iwm.org.uk/server/show/ConWebDoc.1007 |date=18 July 2011}} ''Imperial War Museum Duxford''. Retrieved: 19 October 2010.</ref>
* Britannia C.1 (''XM496'') ''Regulus'' - On display at [[Cotswold Airport]], England, in RAF colours.<ref name = 'regulus' />
* Britannia 307F (''5Y-AYR'') - Cockpit preserved in [[Burnham-on-Sea]], [[Somerset]], England.<ref name="lutonbrit" />

==Specifications (Series 310)==
[[File:Bristol Britannia Cockpit REJS.jpg|thumb|The flight deck of Britannia 312 ''G-AOVT'']]
{{Aircraft specs
| ref=Britannia... Last of the Bristol Line<ref name="Taylor p41">Taylor 1982, p. 41.</ref>
|prime units?=imp
<!--
        General characteristics
-->
| crew=4–7
| capacity=139 passengers (coach class)<ref name="Barnes p360">Barnes 1964, p. 360.</ref>
|length ft=124
|length in=3
|length note=
|span ft=142
|span in=3
|span note=
|height ft=37
|height in=6
|height note=
|wing area sqft=2075
|wing area note=
|aspect ratio=<!-- sailplanes -->
|airfoil='''root:''' [[NACA airfoil|NACA 25017]]; '''tip:''' [[NACA airfoil|NACA 4413]]<ref name="Selig">{{cite web |last1=Lednicer |first1=David |title=The Incomplete Guide to Airfoil Usage |url=https://m-selig.ae.illinois.edu/ads/aircraft.html |website=m-selig.ae.illinois.edu |access-date=16 April 2019}}</ref>
|empty weight lb=86400
|empty weight note=<ref name="Barnes p360" />
|gross weight lb=
|gross weight note=
|max takeoff weight lb=185000
|max takeoff weight note=
|fuel capacity=
|more general=
<!--
        Powerplant
-->
|eng1 number=4
|eng1 name=[[Bristol Proteus 765]]
|eng1 type=[[turboprop]] engines
|eng1 hp=<!-- prop engines -->
|eng1 shp=4450
|eng1 note=equivalent

|prop blade number=4
|prop name=
|prop dia ft=<!-- propeller aircraft -->
|prop dia in=<!-- propeller aircraft -->
|prop dia note=
<!--
        Performance
-->
|max speed mph=397
|max speed note=<ref name="Donald p207">Donald 1997, p. 207.</ref>
|cruise speed mph=357
|cruise speed note=at {{cvt|22000|ft}}
|stall speed mph=
|stall speed note=
|never exceed speed mph=
|never exceed speed note=
|minimum control speed mph=
|minimum control speed note=
|range miles=4430
|range note=
|ferry range miles=
|ferry range note=
|endurance=<!-- if range unknown -->
|ceiling ft=24000
|ceiling note=<ref name="Angelucci p316">Angelucci 1984, p. 316.</ref>
|climb rate ftmin=
|climb rate note=
|time to altitude=
|lift to drag=
|wing loading lb/sqft=
|wing loading note=
|fuel consumption lb/mi=
|power/weight=

|more performance=<!--
* '''Take-off run:''' {{cvt||ft|0}}
* '''Take-off distance to {{cvt|50|ft|0}}:''' {{cvt||ft|0}}
* '''Landing run:''' {{cvt||ft|0}}
* '''Landing distance from {{cvt|50|ft|0}}:''' {{cvt||ft|0}}-->

|avionics=
* [[EKCO]] E120 weather radar<ref name="Flight120457p494">{{cite journal |title=Weather radar |journal=Flight |date=12 April 1957 |volume=71 |issue= 2516 |pages=494–495 |url=http://www.flightglobal.com/pdfarchive/view/1957/1957%20-%200493.html}}</ref>
}}

==See also==
{{portal|Aviation}}
{{Aircontent
| related=
* [[Canadair CP-107 Argus]]
* [[Canadair CL-44|Canadair CL-44/Yukon]]
* [[Conroy Skymonster]]
| similar aircraft=
* [[Antonov An-10]]
* [[Ilyushin Il-18]]
* [[Lockheed L-188 Electra]]
* [[Lockheed L-1249 Super Constellation]] (R7V-2/YC-121F)
* [[Vickers Vanguard]]
| see also=
| lists=
* [[List of aircraft of the Royal Air Force]]
}}

==References==

===Notes===
{{Reflist|group=N}}

===Citations===
{{Reflist|25em}}

===Bibliography===
{{Refbegin}}
* Angelucci, Enzo. ''World Encyclopedia of Civil Aircraft''. London: Willow Books, 1984. {{ISBN|0-00-218148-7}}.
* Barnes, C.H. ''Bristol Aircraft since 1910''. London: Putnam, First ed., 1964.
* Berry, David. ''The RAF Britannia and Its People: 1959 to 1975.'' Startley, Chippenham, UK: Keyham Books, 1996. {{ISBN|0-9527715-4-3}}.
* Carvell, Roger. "Database: Bristol Type 175 Britannia." ''Aeroplane,'' Volume 33, No. 8, August 2005.
* Donald, David, ed. ''The Encyclopedia of World Aircraft.'' Leicester, UK: Blitz Editions, 1997. {{ISBN|1-85605-375-X}}.
* Eastwood, Tony and John Roach. ''Turbo Prop Airliner Production List''. West Drayton, UK: Aviation Hobby Shop, 1990. {{ISBN|0-907178-32-4}}.
* George, Edward. ''The Cuban Intervention in Angola, 1965–1991: From Che Guevara to Cuito Cuanavale.'' London: Routledge, 2005. {{ISBN|0-415-35015-8}}.
* Gunn, John. [https://books.google.com/books?id=CkrYeQcU6K4C ''High Corridors: Qantas, 1954–1970.''] Self-published, John Gunn, 1988. {{ISBN|0-7022-2128-7}}.
* [[Gunston, Bill]]. ''World Encyclopedia of Aero Engines – 5th edition''. London: Sutton Publishing, 2006. {{ISBN|1-85260-163-9}}.
* Guttery, Ben R. ''Encyclopedia of African Airlines.'' Self-published, Ben Guttery, 1998. {{ISBN|0-7864-0495-7}}.
* Hamilton-Paterson, James. ''Empire of the Clouds: When Britain's Aircraft Ruled the World.'' London: Faber and Faber, 2010. {{ISBN|978-0-571-24795-0}}.
* Hayward, Keith. ''The British Aircraft Industry.'' Manchester, UK: Manchester University Press, 1989. {{ISBN|0-7190-2816-7}}.
* Jackson, A.J. ''British Civil Aircraft since 1919: Volume I.'' London: Putnam, 1974. {{ISBN|0-370-10006-9}}.
* Littlefield, David. ''A History of the Bristol Britannia: The Whispering Giant.'' Tiverton, UK: Halsgrove, 1992. {{ISBN|1-874448-01-9}}.
* Oakey, Michael, ed. ''I00 Great British Aircraft.'' ''Aeroplane'' magazine, London: IPC Media Ltd., 2008. ISSN 0143-7240.
* Orlebar, Christopher. ''The Concorde Story.'' Botley, Oxford, UK: Osprey Publishing, 2002. {{ISBN|1-85532-667-1}}.
* Oughton, James D. ''Bristol: An Aircraft Album.'' London: Ian Allan Ltd., 1973. {{ISBN|0-7110-0387-4}}.
* Pickler, Ron and [[Larry Milberry]]. ''Canadair: The First 50 Years.'' Toronto: CANAV Books, 1995. {{ISBN|0-921022-07-7}}.
* Piggot, Peter. ''On Canadian Wings: A Century of Flight.'' Toronto: Dundurn Press Ltd., 2005. {{ISBN|1-55002-549-X}}.
* Swanborough, F. G. ''Turbine-engined Airliners of the World.'' London: Temple Press Books, 1962.
* Taylor, H. A. "Britannia... End of the Bristol Line". ''Air Enthusiast Twenty,'' December 1982 – March 1983.
* Van Riper, A. Bowdoin. ''Imagining Flight: Aviation and Popular Culture'' (Issue 7 of Centennial of Flight Series). College Station, Texas: A&M University Press, 2004. {{ISBN|1-58544-300-X}}.
* Woodley, Charles. ''Bristol Britannia'' (Crowood Aviation Series). Ramsbury, Marlborough, Wiltshire, UK: The Crowood Press, 2003. {{ISBN|1-86126-515-8}}.
{{Refend}}

==External links==
{{Commons category}}
* [https://www.baesystems.com/en/baesystems-com/en/heritage/bristol-175-britannia Bristol 175 Britannia at BAE Systems site]
* [http://www.bristol-britannia.com/ Britannia Aircraft Preservation Trust] {{Webarchive|url=https://web.archive.org/web/20180308113936/http://www.bristol-britannia.com/ |date=8 March 2018 }}
* [http://www.xm496.com/ Bristol Britannia XM496 Preservation Society]
* [http://www.flightglobal.com/pdfarchive/view/1955/1955%20-%201111.html "Bristol Britannia"] a 1955 ''Flight'' article by [[Bill Gunston]]

{{Bristol aircraft}}
{{Short Brothers aircraft}}
{{Authority control}}

[[Category:Bristol Aeroplane Company aircraft|Britannia]]
[[Category:1950s British airliners]]
[[Category:1950s British cargo aircraft]]
[[Category:1950s British military transport aircraft]]
[[Category:Four-engined tractor aircraft]]
[[Category:Four-engined turboprop aircraft]]
[[Category:Low-wing aircraft]]
[[Category:Aircraft first flown in 1952]]
[[Category:Aircraft with retractable tricycle landing gear]]